In our high-tech society, star-crossed lovers, business colleagues and bored teenagers everywhere are finding new ways to communicate. No longer satisfied with analog methods, now we can send each other much shorter messages using digital means.

That’s nothing new but what will a love letter or business email look like in the next ten years? Hopefully as wild as Murmur Wall, a spiraling structure lit in bright purple near the entrance of the Yerba Buena Center for the Arts.

Hard to miss — especially during the darker hours — the piece allows curious visitors to read short messages and even send their own. You can type something into this website and watch your message immediately come up on the sculpture's pod-like spheres with small screens on them. You’re limited to 20 characters (and no symbols)...